Abrasive articles having mechanical fasteners

Abstract

Fixed abrasive articles comprising a substrate having an abrasive surface and an attachment surface, and at least one engaging projection are described. Generally, the engaging projection comprises a top surface having a top surface edge and an attachment end attached to the attachment surface of the substrate. The area of attachment between the attachment end and the attachment surface is bounded by an attachment perimeter. The engaging projection also comprises a mantle surface extending from the top surface edge to the attachment perimeter. At least one profile of the mantle surface is substantially convex from a point of maximum width along the profile to the attachment perimeter.

1 . A fixed abrasive article comprising
 a substrate having an abrasive surface and an attachment surface,   an abrasive layer associated with the abrasive surface of the substrate, and   an engaging projection comprising
 a top surface having a top surface edge, 
 an attachment end attached to the attachment surface of the substrate, wherein an area of attachment between the attachment end and the attachment surface is bounded by an attachment perimeter; and 
 a mantle surface extending from the top surface edge to the attachment perimeter; 
   wherein at least one profile of the mantle surface is substantially convex from a point of maximum width along the profile to the attachment perimeter.   
   
   
       2 . The fixed abrasive article of  claim 1 , wherein the substrate comprises a foraminous substrate. 
   
   
       3 . The fixed abrasive article of  claim 1 , wherein the substrate comprises paper. 
   
   
       4 . The fixed abrasive article according to  claim 1 , wherein the engaging projection is directly attached to the attachment surface of the substrate. 
   
   
       5 . The fixed abrasive article according to  claim 1 , wherein at least one intermediate layer is interposed between the attachment end of the engaging projection and the attachment surface. 
   
   
       6 . The fixed abrasive article according to  claim 1 , wherein the abrasive layer comprises shaped structures comprising a cured resin binder and abrasive particles, wherein the shaped structures have interconnected pores. 
   
   
       7 . The fixed abrasive article according to  claim 1 , wherein the abrasive layer comprises an abrasive composite layer comprising a plurality of precisely shaped abrasive structures. 
   
   
       8 . A fixed abrasive article comprising
 a first substrate having an abrasive surface and an attachment surface,   an abrasive layer associated with the abrasive surface of the substrate, and   an attachment layer, wherein the attachment layer comprises
 a second substrate having a first surface and a second surface, wherein the first surface of the second substrate is attached to the attachment surface of the first substrate; and 
 an engaging projection comprising
 a top surface having a top surface edge, 
 an attachment end attached to the second surface of the second substrate, wherein an area of attachment between the attachment end and the second surface is bounded by an attachment perimeter; and 
 a mantle surface extending from the top surface edge to the attachment perimeter; wherein at least one profile of the mantle surface is substantially convex from a point of maximum width along the profile to the attachment perimeter. 
 
   
   
   
       9 . The fixed abrasive article of  claim 8 , wherein the first surface of the second substrate is attached to the attachment surface of the first substrate via an adhesive layer. 
   
   
       10 . The fixed abrasive article of  claim 8 , wherein at least one of the first substrate and the second substrate comprises a material selected from the group consisting of paper, a foraminous substrate, and combinations thereof. 
   
   
       11 . The fixed abrasive article according to  claim 8 , wherein the abrasive layer comprises shaped structures comprising a cured resin binder and abrasive particles, wherein the shaped structures have interconnected pores. 
   
   
       12 . The fixed abrasive article according to  claim 8 , wherein the abrasive layer comprises an abrasive composite layer comprising a plurality of precisely shaped abrasive structures. 
   
   
       13 . The fixed abrasive article according to  claim 8 , wherein the abrasive layer is directly attached to the abrasive surface of the substrate. 
   
   
       14 . The fixed abrasive article according to  claim 8 , wherein the abrasive layer comprises a make coat, and abrasive particles at least partially embedded in the make coat. 
   
   
       15 . The fixed abrasive article of  claim 14 , further comprising a size coat over the abrasive particles. 
   
   
       16 . The fixed abrasive article according to  claim 8 , wherein the abrasive layer comprises a primer and abrasive particles attached to the primer. 
   
   
       17 . The fixed abrasive article according to  claim 8 , wherein the abrasive layer comprises abrasive particles dispersed in a binder.